The wonderful Trampoline

Exercise for the cells
Toxins or poisons can congrgate in the cells of the body for a number of reasons. They may have been introduced by ourselves, by smoking for example, or they may have entered through a cut or other broken skin, or by entering through the nose or mouth. Some toxins are produced during the normal course of the metabolic process. Most are fought off by the immune system and removed naturally through organs such as the liver, kidneys, lungs, colon and skin in the form of urine, feces and exhalation of air.
It is thought that the G force exerted on the body by the bodies motion on a trampoline, helps to "push out" the toxins and airborne the lower cell pressure permits the influx of nutrients and oxygen thus improving cell "exercise".
Bouncing for a healthy heart
Exercising on a trampoline has several benefits in terms of the body's cardiovascular system:
1- Increases strength and fitness of the muscles, especially of the legs to lighten the load on the heart when pumping blood around the body
2-Increases oxygen availability throughout the body
3-Maintains a healthy body weight and lessens the likelihood of obesity
4-Aids lymphatic circulation
5-Reduces levels of cholesterol and triglycerides
6-Stimulates the metabolism and digestive processes

Bones of Steel
Well, perhaps not quite, but it has been shown that this sort of high impace exercise, improves the bones mineral content and therefore the density of bones lessening the likelihood of fracures due to osteoporoses. Unlike other high impact exercise such as jogging, the bounciness of the trampoline absorbs the down force and won't cause jarring of the load bearing joints or spine.
Motoring
Trampolining helps to develop motor skills because of the need to maintain height and balance simultaneously while responding to gravitational forces. Thus, all sides of the body and brain are involved in the exercise. You don't need a large trampoling to be able to benefit in the above benefits, small, portable ones, known as a rebounder will do just as well.